Kiln



Sept. 3, 1929 M. 5. PRICE v KILN Filed March 17, 1926 INVENTOR,

[TL 5. PRICE.

ATTORNEY Patented Sept. 3, 1929.

, 7 Marine s. PRICE,

TIES PATENT .orFicizQ on SANTA 03oz, CALIFORNIA.

' KILN.

' Application filed March 17, 1926. Serial No. 95,394.

This invention relates to impro vements in kilns and has particular reference to a kiln adapted to beused in the preparing of, ce-

ment. It is obvious, however, kiln may be employed I q The principal object produce a by permitting aslow travel of rial through the that the same in many other places. of this invention is to kiln having two inclinations thereraw matethe first portion of the kiln and later accelerating the rate of travel through the latter portion of the kiln.

Another object of this invention is to increase production per kiln.

An additional object is to produce a kiln having a greater'heating area at the point at which the'raw material is introduced and a to further permit a greater transferv of heat to the material, thus saving in losses.

A still further object is to slow locity of gas heat to the material in the kiln.

Another object is to with its resultant transfer 0 fuel and stack up the veproduce a kiln wherein a large volume of material may be treated,

thereby increasing the present in a rotary kiln.

Further objects are to eliminate at the feed end of is accomplished shaped kiln having a grinding effect always p mud rings the kiln which elimination by virtue of the funnellarger diameter and,

consequently, less arching effect which construction serves 'to minimize mud ring troubles; and due to the mass of materials in the funnel-shaped section grea ter mixing is accomplished thereby improving the product.

Other objects and advantages will be apparent during the course of the following description.

In the accompanying part of this specification, numerals are employed to parts throughout the same,

Figure I is a side elevation of structed in accordance with my and Figure II is a drawings and in forming a which like designate like a kiln coninvention,

diagrammatic view showing the various inclinations of the kiln with respect to the axis of the kiln.

In the burning of material for cement, it has been common to employ a kiln having but one inclination, the result being that the material carried through the kiln had a uniform speed. By constructing a kiln w ith two inf line 18. In order to clinations, it is possible to effect a large quantity of material to thekiln and dueto ,its initial slow travel through the kiln,.a; large amount of heat is absorbed from the hot gases passing through and to finally discharge the material in a relatively thin stream which can then be properly burned. I

In the accompanying drawings wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral 5 designates a throat which provides the inlet end of thekiln and to-Which is socured a funnel like member 6. This member 6 has connected thereto a kiln section 7. This kiln section 7 is tapered and is supportedin I the customary manner as by rings 11, 12 and 13 Which travel upon rollers positioned in bearing blocks 14, 16 and 17, respectively.

These bearing blocks are mounted upon any surface such as designated by the ground turn the kiln, I have shown a gear 19 secured thereto, with which a gear 21 meshes. This gear by a shaft 22 from any suitable source of ower.

At 23 I have shown a kiln section cylindri cal in form and connected to the kiln section 7 as at 24. At 26 I have shown a supporting ring which travels upon rollers mounted in the bearing block 27. The free end of the kiln section 23 constitutes the outlet end of the kiln and this section is much shorter than the section 7.

Referring now to Figure II, the broken line A-B designates the axis of the kiln, the line CE the inclination of the cylindrical portion 23 of the kiln with respect to the floor line, the line EF the surface of the portion 7 of the cone or inclination of this surface, with respect to the axis. The line F-G designates the surface of the funnel or inclination thereof, with respect to the axis and the 21 is connected line GD the surface of the throat with repass into the cylindrical portion of the kiln which has the same inclination as the axis.

This will cause the material totravel at a greater rate thereby being thinned out and capable of absorbing a greater quantity of heat which places the same in proper condition to be burned.

V It will thus be seen that I have produced a kiln which will accomplish all of the objects above set forth.

It is to be understood that'the form of my invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape, size andarrangementof parts may be resortedto without departing from the spirit of the invention or the scope of the subjoined claim.

Having thus described my invention, I claim A rotary inclined kiln comprisinga relatively long tapered section, 'a funnel like member having its large end formed with the large end of said tapered section, a throat of cylindrical formation and being formed with the opposite end of the funnel like member, said throat providing the inlet end of the kiln, a relatively short cylindrical section having one end secured to and in communication with the small end of said long tapered section and itsoppos'ite' end constituting the outlet endofthe kiln, saidoutlet end being disposed belowthe inlet end, means for rotatably supporting the sections at an inclination with their longitudinal axis in alignment wherebythe wall of the. cylindrical section will be disposed at a greater inclination with respect to the ground than the wall of the tapered section so that material in assing through the kiln will 'move relatively slow through the tapered section and increase in movement when passing through the eylindricalfsection with the result the material will be subjected to heat accordingly, and means for rotating the sections.

In testimony whereof I aflix my signature.

I MENNO '3. PRICE. 

